.layout .sidebar-right {
    position: sticky;
    top: 64px;
    height: calc(100vh - 64px);

    display: flex;
    flex-direction: column;

    box-sizing: border-box;

    padding: 32px 20px;

    overflow-y: auto;

    background: var(--bg-main);
    border-left: 1px solid var(--border-subtle);
}

.layout .sidebar-right .article-nav {
    display: flex;
    flex-direction: column;
    gap: 36px;
}

.layout .sidebar-right .article-nav-section {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.layout .sidebar-right .article-nav-title {
    margin: 0;
    padding: 0 8px;

    color: var(--text-muted);

    font-size: 14px;
    font-weight: 600;
    line-height: 1.4;

    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.layout .sidebar-right .article-nav-list {
    display: flex;
    flex-direction: column;

    margin: 0;
    padding: 0;

    list-style: none;

    border-left: 1px solid var(--border-subtle);
}

.layout .sidebar-right .article-nav-link {
    position: relative;

    display: block;

    padding: 6px 8px 6px 14px;

    color: var(--text-muted);

    font-size: 14px;
    line-height: 1.5;

    text-decoration: none;

    transition:
        color 150ms ease,
        border-color 150ms ease,
        background 150ms ease;
}

.layout .sidebar-right .article-nav-link:hover {
    color: var(--text-primary);
    background: rgba(0, 229, 255, 0.025);
}

.layout .sidebar-right .article-nav-link.active {
    color: var(--neon-green);
}

.layout .sidebar-right .article-nav-link.active::before {
    content: "";

    position: absolute;

    top: 0;
    bottom: 0;
    left: -1px;

    width: 2px;

    background: var(--neon-green);

    box-shadow:
        0 0 6px var(--neon-green),
        0 0 12px rgba(0, 255, 136, 0.45);
}

.layout .sidebar-right .article-meta-card {
    display: flex;
    flex-direction: column;

    border: 1px solid var(--border-subtle);
    border-radius: 4px;

    background: rgba(255, 255, 255, 0.01);
}

.layout .sidebar-right .article-meta-row {
    display: flex;
    align-items: center;
    justify-content: space-between;

    min-height: 32px;
    padding: 0 10px;

    border-bottom: 1px solid var(--border-subtle);
}

.layout .sidebar-right .article-meta-row:last-child {
    border-bottom: none;
}

.layout .sidebar-right .article-meta-label {
    color: var(--text-muted);

    font-size: 11px;
    font-weight: 600;

    letter-spacing: 0.1em;
}

.layout .sidebar-right .article-meta-value {
    color: var(--text-secondary);

    font-size: 10px;
    font-weight: 500;

    letter-spacing: 0.04em;
    text-align: right;
}

.layout .sidebar-right .article-related-list {
    display: flex;
    flex-direction: column;

    gap: 4px;

    margin: 0;
    padding: 0;

    list-style: none;
}

.layout .sidebar-right .article-related-link {
    display: block;

    padding: 7px 8px;

    border: 1px solid transparent;
    border-radius: 3px;

    color: var(--text-secondary);

    font-size: 14px;
    line-height: 1.5;

    text-decoration: none;

    transition:
        color 150ms ease,
        background 150ms ease,
        border-color 150ms ease;
}

.layout .sidebar-right .article-related-link::before {
    content: "↗";

    margin-right: 7px;

    color: var(--text-muted);

    transition: color 150ms ease;
}

.layout .sidebar-right .article-related-link:hover {
    color: var(--neon-cyan);

    background: rgba(0, 229, 255, 0.035);
    border-color: rgba(0, 229, 255, 0.12);
}

.layout .sidebar-right .article-related-link:hover::before {
    color: var(--neon-cyan);
}

.layout .sidebar-right .sidebar-right-status {
    display: flex;
    align-items: center;
    gap: 7px;

    margin-top: auto;
    padding: 12px 8px 0;

    color: var(--text-muted);

    font-size: 8px;
    font-weight: 500;

    letter-spacing: 0.1em;
}

.layout .sidebar-right .sidebar-right-status-dot {
    width: 5px;
    height: 5px;

    border-radius: 50%;

    background: var(--neon-green);

    box-shadow:
        0 0 5px var(--neon-green),
        0 0 10px rgba(0, 255, 136, 0.4);
}